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含氟含醚二酐衍生的无色透明聚酰亚胺薄膜具有高综合性能。

High comprehensive properties of colorless transparent polyimide films derived from fluorine-containing and ether-containing dianhydride.

作者信息

Shi Yan, Hu Jinzhi, Li Xiaomin, Jian Jing, Jiang Lili, Yin Chuanqiang, Xi Yuchun, Huang Kai, Su Liejun, Zhou Lang

机构信息

Institute of Photovoltaics, Nanchang University Nanchang 330031 P. R. China

Institute of New Materials Technology, NCU-GQC Institute of PV-HE-ES Technology Jiujiang 332020 P. R. China.

出版信息

RSC Adv. 2024 Oct 15;14(44):32613-32623. doi: 10.1039/d4ra05505e. eCollection 2024 Oct 9.

DOI:10.1039/d4ra05505e
PMID:39416376
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11480813/
Abstract

Fluorinated colorless transparent polyimide (CPI) films are crucial for flexible displays and wearable devices, but their development is limited by high costs and relatively low mechanical properties. In this study, a series of colorless transparent polyimide films was synthesized by incorporating the cost-effective ether-containing diamine, 4,4'-isopropylidenediphenoxy bis(phthalic anhydride) (BPADA), into commercially available 4,4'-(hexafluoroisopropyl)diphthalic anhydride (6FDA) and 2,2'-bis(trifluoromethyl)benzidine (TFMB). The comprehensive properties of the films were systematically investigated using a combination of experimental and numerical methods, including molecular dynamics (MD) simulations and density functional theory (DFT). This study focuses on exploring the influence of varying dianhydride ratios on the aforementioned properties. The incorporation of BPADA in the dianhydride significantly enhances the mechanical properties and flexibility of the film. When the ratio of ether anhydride to fluorine anhydride is 4 : 6 (CPI-4), the tensile strength is 135.3 MPa, and the elongation at break is 8.3%, which is 109.6% and 118.45% higher than that of the original film without ether anhydride. This research provides valuable insights for the future application of new polyimide materials in flexible display devices.

摘要

氟化无色透明聚酰亚胺（CPI）薄膜对柔性显示器和可穿戴设备至关重要，但其发展受到高成本和相对较低机械性能的限制。在本研究中，通过将具有成本效益的含醚二胺4,4'-异丙基二苯氧基双（邻苯二甲酸酐）（BPADA）引入市售的4,4'-（六氟异丙基）二邻苯二甲酸酐（6FDA）和2,2'-双（三氟甲基）联苯胺（TFMB）中，合成了一系列无色透明聚酰亚胺薄膜。使用包括分子动力学（MD）模拟和密度泛函理论（DFT）在内的实验和数值方法相结合，系统地研究了薄膜的综合性能。本研究重点探讨了不同二酐比例对上述性能的影响。在二酐中引入BPADA显著提高了薄膜的机械性能和柔韧性。当醚酐与氟酐的比例为4 : 6（CPI-4）时，拉伸强度为135.3 MPa，断裂伸长率为8.3%，分别比不含醚酐的原始薄膜高出109.6%和118.45%。本研究为新型聚酰亚胺材料在柔性显示器件中的未来应用提供了有价值的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/546c847eee04/d4ra05505e-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/59949fcf944a/d4ra05505e-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/aa537db1a632/d4ra05505e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/71d64ebfb374/d4ra05505e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/5f86957c15c5/d4ra05505e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/edd2ac1f510a/d4ra05505e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/c584dd8dc2c3/d4ra05505e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/cc56d0397baf/d4ra05505e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/c239b33dd449/d4ra05505e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/546c847eee04/d4ra05505e-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/59949fcf944a/d4ra05505e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/e700ea7f388d/d4ra05505e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/aa537db1a632/d4ra05505e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/71d64ebfb374/d4ra05505e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/5f86957c15c5/d4ra05505e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/edd2ac1f510a/d4ra05505e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/c584dd8dc2c3/d4ra05505e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/cc56d0397baf/d4ra05505e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/c239b33dd449/d4ra05505e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aca7/11480813/546c847eee04/d4ra05505e-f10.jpg

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